Analysis Overview
SHA256
413bd0bab52129e4bafc343c40b16f47771eb154ebb13d415211ac5067cef4b7
Threat Level: Known bad
The file 413bd0bab52129e4bafc343c40b16f47771eb154ebb13d415211ac5067cef4b7 was found to be: Known bad.
Malicious Activity Summary
Ryuk
Executes dropped EXE
Loads dropped DLL
Deletes itself
Checks computer location settings
Adds Run key to start application
Drops file in Program Files directory
Enumerates physical storage devices
Suspicious use of WriteProcessMemory
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
MITRE ATT&CK
Enterprise Matrix V6
Analysis: static1
Detonation Overview
Reported
2022-02-20 08:04
Signatures
Analysis: behavioral1
Detonation Overview
Submitted
2022-02-20 08:04
Reported
2022-02-20 09:20
Platform
win7-en-20211208
Max time kernel
168s
Max time network
44s
Command Line
Signatures
Ryuk
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\users\Public\LCDyJ.exe | N/A |
Deletes itself
| Description | Indicator | Process | Target |
| N/A | N/A | C:\users\Public\LCDyJ.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\413bd0bab52129e4bafc343c40b16f47771eb154ebb13d415211ac5067cef4b7.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\USER\S-1-5-21-3846991908-3261386348-1409841751-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run | C:\Windows\system32\reg.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-3846991908-3261386348-1409841751-1000\Software\Microsoft\Windows\CurrentVersion\Run\svchos = "C:\\users\\Public\\LCDyJ.exe" | C:\Windows\system32\reg.exe | N/A |
Drops file in Program Files directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\features\org.eclipse.emf.common_2.10.1.v20140901-1043\RyukReadMe.txt | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Common Files\microsoft shared\THEMES14\SKY\RyukReadMe.txt | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\com.jrockit.mc.console.ui.diagnostic.zh_CN_5.5.0.165303.jar | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\visualvm\modules\locale\com-sun-tools-visualvm-sa_ja.jar | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files\Java\jre7\lib\zi\America\St_Johns | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files\Java\jre7\lib\zi\Etc\GMT-9 | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files\VideoLAN\VLC\locale\ast\LC_MESSAGES\vlc.mo | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files\DVD Maker\Shared\RyukReadMe.txt | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files\DVD Maker\Shared\DvdStyles\SpecialOccasion\NavigationUp_SelectionSubpicture.png | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files\Java\jre7\lib\zi\America\Argentina\Rio_Gallegos | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files\DVD Maker\Shared\DvdStyles\Full\1047x576black.png | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\visualvm\core\com-sun-tools-visualvm-modules-startup.jar | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files\Java\jre7\lib\zi\America\Cambridge_Bay | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\profiler\modules\locale\org-netbeans-modules-profiler-snaptracer_zh_CN.jar | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files\Java\jre7\lib\zi\America\Cayenne | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files\Java\jre7\lib\zi\Pacific\Norfolk | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files\VideoLAN\VLC\locale\ta\LC_MESSAGES\vlc.mo | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\com.jrockit.mc.console.ui_5.5.0.165303.jar | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\org.apache.jasper.glassfish_2.2.2.v201205150955.jar | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\platform\update_tracking\org-openide-nodes.xml | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files\Java\jre7\lib\deploy\messages_zh_HK.properties | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files\Java\jre7\lib\zi\Etc\GMT+3 | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files\Microsoft Games\Multiplayer\Checkers\de-DE\RyukReadMe.txt | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk1.7.0_80\include\jvmticmlr.h | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk1.7.0_80\jre\lib\zi\Europe\Warsaw | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\platform\config\Modules\org-netbeans-swing-plaf.xml | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files\Java\jre7\lib\zi\Asia\Jerusalem | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files\VideoLAN\VLC\plugins\packetizer\RyukReadMe.txt | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files\DVD Maker\Shared\DvdStyles\Rectangles\RyukReadMe.txt | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\org.eclipse.equinox.p2.reconciler.dropins.nl_zh_4.4.0.v20140623020002.jar | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\profiler\modules\locale\org-netbeans-modules-profiler-selector-ui_ja.jar | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\platform\config\Modules\org-netbeans-swing-tabcontrol.xml | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\platform\modules\org-openide-compat.jar | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Common Files\microsoft shared\OFFICE14\Office Setup Controller\Publisher.en-us\PublisherMUI.XML | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\com.jrockit.mc.console.ui.notification_5.5.0.165303\html\dcommon\gifs\rarrow.gif | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\platform\modules\locale\org-netbeans-api-progress_zh_CN.jar | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\visualvm\config\Modules\org-openide-compat.xml_hidden | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files\Microsoft Games\Mahjong\es-ES\RyukReadMe.txt | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Adobe\Reader 9.0\Reader\plug_ins\Accessibility.api | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk1.7.0_80\jre\lib\zi\America\Antigua | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk1.7.0_80\jre\lib\zi\America\Argentina\La_Rioja | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk1.7.0_80\jre\lib\zi\Asia\Beirut | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Common Files\microsoft shared\OFFICE14\Office Setup Controller\Publisher.en-us\RyukReadMe.txt | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Common Files\microsoft shared\THEMES14\COMPASS\THMBNAIL.PNG | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Common Files\microsoft shared\GRPHFLT\MS.EPS | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Common Files\microsoft shared\THEMES14\SONORA\THMBNAIL.PNG | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Common Files\microsoft shared\TRANSLAT\ARFR\RyukReadMe.txt | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk1.7.0_80\jre\lib\zi\Africa\Maputo | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk1.7.0_80\jre\lib\zi\America\Fortaleza | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Adobe\Reader 9.0\Resource\ENUtxt.pdf | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Common Files\microsoft shared\Help\1040\RyukReadMe.txt | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\visualvm\update_tracking\com-sun-tools-visualvm-charts.xml | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\platform\modules\locale\org-netbeans-modules-editor-mimelookup_ja.jar | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\platform\modules\org-netbeans-modules-keyring-impl.jar | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\platform\update_tracking\org-openide-text.xml | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\etc\RyukReadMe.txt | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\platform\config\Modules\org-netbeans-modules-keyring.xml | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Adobe\Reader 9.0\Reader\plug_ins\DigSig.api | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Common Files\microsoft shared\THEMES14\WATER\RyukReadMe.txt | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Common Files\microsoft shared\THEMES14\WATER\WATER.INF | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files\Common Files\Microsoft Shared\ink\fsdefinitions\main\base_jpn.xml | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files\DVD Maker\Shared\DvdStyles\BabyGirl\16_9-frame-highlight.png | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\org.eclipse.emf.ecore.xmi_2.10.1.v20140901-1043.jar | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\platform\modules\RyukReadMe.txt | C:\Windows\system32\taskhost.exe | N/A |
Enumerates physical storage devices
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\users\Public\LCDyJ.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\users\Public\LCDyJ.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Windows\system32\Dwm.exe
"C:\Windows\system32\Dwm.exe"
C:\Windows\system32\taskhost.exe
"taskhost.exe"
C:\Users\Admin\AppData\Local\Temp\413bd0bab52129e4bafc343c40b16f47771eb154ebb13d415211ac5067cef4b7.exe
"C:\Users\Admin\AppData\Local\Temp\413bd0bab52129e4bafc343c40b16f47771eb154ebb13d415211ac5067cef4b7.exe"
C:\users\Public\LCDyJ.exe
"C:\users\Public\LCDyJ.exe" C:\Users\Admin\AppData\Local\Temp\413bd0bab52129e4bafc343c40b16f47771eb154ebb13d415211ac5067cef4b7.exe
C:\Windows\System32\cmd.exe
"C:\Windows\System32\cmd.exe" /C REG ADD "HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /v "svchos" /t REG_SZ /d "C:\users\Public\LCDyJ.exe" /f
C:\Windows\system32\reg.exe
REG ADD "HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /v "svchos" /t REG_SZ /d "C:\users\Public\LCDyJ.exe" /f
Network
Files
memory/1796-54-0x0000000076C61000-0x0000000076C63000-memory.dmp
C:\Users\Public\LCDyJ.exe
| MD5 | c5609ab395ee733f889c28d9f93f2af3 |
| SHA1 | ee4099fc9381c45aaa32505521a8dbc1daf3ff78 |
| SHA256 | 1659503da5d0318c6025ea87b125b4917d53f4f666461b42d7cc2552ac2b3992 |
| SHA512 | 39fa80bc077b24b1f8814b19722613b472343dded1fd14b1231e11a6b03c2ae477db2f787a4f2d72b39b611c2070ad833068e2e01fd18e9cab257414e2ce1caf |
\Users\Public\LCDyJ.exe
| MD5 | c5609ab395ee733f889c28d9f93f2af3 |
| SHA1 | ee4099fc9381c45aaa32505521a8dbc1daf3ff78 |
| SHA256 | 1659503da5d0318c6025ea87b125b4917d53f4f666461b42d7cc2552ac2b3992 |
| SHA512 | 39fa80bc077b24b1f8814b19722613b472343dded1fd14b1231e11a6b03c2ae477db2f787a4f2d72b39b611c2070ad833068e2e01fd18e9cab257414e2ce1caf |
memory/520-57-0x000007FEFC321000-0x000007FEFC323000-memory.dmp
memory/1276-58-0x000000013F5B0000-0x000000013F93A000-memory.dmp
memory/1276-61-0x000000013F5B0000-0x000000013F93A000-memory.dmp
memory/640-62-0x000000013F5B0000-0x000000013F93A000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2022-02-20 08:04
Reported
2022-02-20 09:19
Platform
win10v2004-en-20220113
Max time kernel
46s
Max time network
124s
Command Line
Signatures
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\users\Public\eTvVE.exe | N/A |
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-1346565761-3498240568-4147300184-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\413bd0bab52129e4bafc343c40b16f47771eb154ebb13d415211ac5067cef4b7.exe | N/A |
| Key value queried | \REGISTRY\USER\S-1-5-21-1346565761-3498240568-4147300184-1000\Control Panel\International\Geo\Nation | C:\users\Public\eTvVE.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\USER\S-1-5-21-1346565761-3498240568-4147300184-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run | C:\Windows\system32\reg.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-1346565761-3498240568-4147300184-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\svchos = "C:\\users\\Public\\eTvVE.exe" | C:\Windows\system32\reg.exe | N/A |
Enumerates physical storage devices
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\users\Public\eTvVE.exe | N/A |
| N/A | N/A | C:\users\Public\eTvVE.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\users\Public\eTvVE.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Windows\system32\DllHost.exe
C:\Windows\system32\DllHost.exe /Processid:{3EB3C877-1F16-487C-9050-104DBCD66683}
C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k ClipboardSvcGroup -p -s cbdhsvc
C:\Windows\system32\taskhostw.exe
taskhostw.exe {222A245B-E637-4AE9-A93F-A59CA119A75E}
C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k UnistackSvcGroup -s CDPUserSvc
C:\Windows\system32\sihost.exe
sihost.exe
C:\Users\Admin\AppData\Local\Temp\413bd0bab52129e4bafc343c40b16f47771eb154ebb13d415211ac5067cef4b7.exe
"C:\Users\Admin\AppData\Local\Temp\413bd0bab52129e4bafc343c40b16f47771eb154ebb13d415211ac5067cef4b7.exe"
C:\users\Public\eTvVE.exe
"C:\users\Public\eTvVE.exe" C:\Users\Admin\AppData\Local\Temp\413bd0bab52129e4bafc343c40b16f47771eb154ebb13d415211ac5067cef4b7.exe
C:\Windows\System32\cmd.exe
"C:\Windows\System32\cmd.exe" /C REG ADD "HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /v "svchos" /t REG_SZ /d "C:\users\Public\eTvVE.exe" /f
C:\Windows\system32\reg.exe
REG ADD "HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /v "svchos" /t REG_SZ /d "C:\users\Public\eTvVE.exe" /f
Network
| Country | Destination | Domain | Proto |
| NL | 178.79.208.1:80 | tcp | |
| NL | 178.79.208.1:80 | tcp | |
| US | 8.8.8.8:53 | crl4.digicert.com | udp |
| US | 93.184.220.29:80 | crl4.digicert.com | tcp |
| US | 93.184.220.29:80 | crl4.digicert.com | tcp |
Files
C:\Users\Public\eTvVE.exe
| MD5 | c5609ab395ee733f889c28d9f93f2af3 |
| SHA1 | ee4099fc9381c45aaa32505521a8dbc1daf3ff78 |
| SHA256 | 1659503da5d0318c6025ea87b125b4917d53f4f666461b42d7cc2552ac2b3992 |
| SHA512 | 39fa80bc077b24b1f8814b19722613b472343dded1fd14b1231e11a6b03c2ae477db2f787a4f2d72b39b611c2070ad833068e2e01fd18e9cab257414e2ce1caf |
C:\users\Public\eTvVE.exe
| MD5 | c5609ab395ee733f889c28d9f93f2af3 |
| SHA1 | ee4099fc9381c45aaa32505521a8dbc1daf3ff78 |
| SHA256 | 1659503da5d0318c6025ea87b125b4917d53f4f666461b42d7cc2552ac2b3992 |
| SHA512 | 39fa80bc077b24b1f8814b19722613b472343dded1fd14b1231e11a6b03c2ae477db2f787a4f2d72b39b611c2070ad833068e2e01fd18e9cab257414e2ce1caf |
memory/2288-133-0x00007FF601DA0000-0x00007FF60212A000-memory.dmp
memory/764-134-0x00007FF601DA0000-0x00007FF60212A000-memory.dmp